I think this might be helpful:
I tried reinstalling windows apps with 10AppsManager from thewindowsclub.com. It showed 'disk image malformed' message with following log:
See the end of this message for details on invoking
just-in-time...

My store app and all other apps aren't showing in start menu although they open when i open any program such as photos. when using following instructions in powershell:
reg delete "HKCU\Software\Microsoft\Windows...